/* $Id$ */ /* * This file is part of OpenTTD. * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2. * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>. */ /** @file road_map.cpp Complex road accessors. */ #include "stdafx.h" #include "station_map.h" #include "tunnelbridge_map.h" /** * Returns the RoadBits on an arbitrary tile * Special behaviour: * - road depots: entrance is treated as road piece * - road tunnels: entrance is treated as road piece * - bridge ramps: start of the ramp is treated as road piece * - bridge middle parts: bridge itself is ignored * * If straight_tunnel_bridge_entrance is set a ROAD_X or ROAD_Y * for bridge ramps and tunnel entrances is returned depending * on the orientation of the tunnel or bridge. * @param tile the tile to get the road bits for * @param rt the road type to get the road bits form * @param straight_tunnel_bridge_entrance whether to return straight road bits for tunnels/bridges. * @return the road bits of the given tile */ RoadBits GetAnyRoadBits(TileIndex tile, RoadType rt, bool straight_tunnel_bridge_entrance) { if (!HasTileRoadType(tile, rt)) return ROAD_NONE; switch (GetTileType(tile)) { case MP_ROAD: switch (GetRoadTileType(tile)) { default: case ROAD_TILE_NORMAL: return GetRoadBits(tile, rt); case ROAD_TILE_CROSSING: return GetCrossingRoadBits(tile); case ROAD_TILE_DEPOT: return DiagDirToRoadBits(GetRoadDepotDirection(tile)); } case MP_STATION: if (!IsRoadStopTile(tile)) return ROAD_NONE; if (IsDriveThroughStopTile(tile)) return (GetRoadStopDir(tile) == DIAGDIR_NE) ? ROAD_X : ROAD_Y; return DiagDirToRoadBits(GetRoadStopDir(tile)); case MP_TUNNELBRIDGE: if (GetTunnelBridgeTransportType(tile) != TRANSPORT_ROAD) return ROAD_NONE; return straight_tunnel_bridge_entrance ? AxisToRoadBits(DiagDirToAxis(GetTunnelBridgeDirection(tile))) : DiagDirToRoadBits(ReverseDiagDir(GetTunnelBridgeDirection(tile))); default: return ROAD_NONE; } }